v1.17: rekey stake redelegate feature (backport of #33957) #3359

Job	Run time
test	0s
check	0s
cargo-test-sbf (token/program)	18m 44s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	29m 23s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	12m 25s
cargo-test-sbf (token-upgrade/program)	18m 27s
cargo-test-sbf (feature-proposal/program)	13m 13s
cargo-test-sbf (governance/addin-mock/program, governance/program)	15m 17s
cargo-test-sbf (memo/program)	16m 59s
cargo-test-sbf (name-service/program)	11m 4s
cargo-test-sbf (stake-pool/program)	14m 26s
cargo-test-sbf (single-pool/program)	15m 14s
	2h 45m 12s

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